1. What is Pregnancy Calculator?

The Pregnancy Calculator estimates your due date based on your last menstrual period (LMP). It uses the standard calculation of adding 280 days (40 weeks) to your LMP date.

2. How Does the Calculator Work?

The calculator uses the standard EDD formula:

Where:

• \( EDD \) — Estimated Due Date
• \( LMP \) — Last Menstrual Period date
• \( 280 \text{ days} \) — Standard pregnancy duration (40 weeks)

Explanation: This calculation is based on Naegele's rule and assumes a regular 28-day menstrual cycle with ovulation occurring on day 14.

3. Importance of EDD Calculation

Details: Knowing your estimated due date helps in planning prenatal care, monitoring fetal development, and preparing for delivery. It also helps healthcare providers track pregnancy progress and identify any potential complications.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period accurately. The calculator will provide your estimated due date and current weeks of pregnancy.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: The calculator provides an estimate based on standard calculations. Actual delivery dates may vary by ±2 weeks.

Q2: What if I have irregular periods?
A: For irregular periods, an ultrasound dating in early pregnancy is more accurate for determining the due date.

Q3: Can the due date change?
A: Yes, healthcare providers may adjust the due date based on ultrasound measurements, especially if there's a significant difference from LMP-based calculation.

Q4: What is considered full-term pregnancy?
A: Full-term is between 39 weeks 0 days and 40 weeks 6 days. Early term is 37-38 weeks, late term is 41 weeks, and post-term is 42+ weeks.

Q5: When should I confirm with a doctor?
A: Always confirm your due date with a healthcare provider and attend regular prenatal check-ups for accurate monitoring.